IRWIN BUILDERS LIMITED
Company number 03330948 · Active W7 3QX
IRWIN BUILDERS LIMITED is an active private limited company (company number 03330948) incorporated on 10 March 1997. Its registered activity is construction of other civil engineering projects n.e.c. (SIC 42990). Latest small accounts cover the period ending 31 March 2025, showing net assets of £589k and cash of £795k, with 2 employees on average. Net assets rose 18% on the prior period (£501k).
By net assets it sits in the top quarter of 832 comparable companies in London (median £5,799, upper quartile £58k).
Key dates
- Incorporated
- 10 March 1997
- Next accounts due
- 31 December 2026 — in 70 days
- Confirmation statement due
- 24 March 2027 — in 153 days
Due dates are expected from Companies House filing rules; confirm on the official register before relying on them.
Activity
- SIC 42990
- Construction of other civil engineering projects n.e.c.
- SIC 43210
- Electrical installation
- SIC 43220
- Plumbing, heat and air-conditioning installation
- SIC 43320
- Joinery installation
- Accounts type
- Total Exemption Full
- Size band
- Micro (Companies Act thresholds)
Financials — 2 periods on record, latest ending 31 March 2025
| Period end | Net assets | Cash | Debtors | Creditors <1y | Turnover | Profit | Employees |
|---|---|---|---|---|---|---|---|
| 31 March 2025 | £589k | £795k | — | — | — | — | 2 |
| 31 March 2024 | £501k | £447k | — | — | — | — | 2 |
- Cash per employee
- £398k
Figures as filed in iXBRL accounts at Companies House. "—" means the line was not reported in that filing.
Firmoscan score: 80/100 (grade A)
- +10 Positive net assets — Net assets £589,153 at 2025-03-31
- +8 Net assets growing — +17.6% vs prior period
- +4 Cash reserves — Cash £795,159
- +8 Established — Incorporated 1997-03-10 (30 years)
A transparent, rules-based score from filed data only: every point lists its evidence. It is not a credit rating or advice.
Ownership and control
- Mr William Irwin — owns 75–100% of shares · since 6 April 2016
Persons with significant control hold 25% or more of shares or voting rights. Smaller shareholdings are only listed in confirmation-statement documents.
Similar companies in London
Same activity (construction of other civil engineering projects n.e.c.), closest in incorporation date.
- KLT UTILITIES LIMITED — London, inc. Mar 1997
- A.D. BANNISTER ROOFING & BUILDING LTD — London, inc. May 1997
- WILLTON HOMES LIMITED — London, inc. Aug 1996
- SIGNAL SERVICES LTD — London, inc. Oct 1997
- FOCUSVIEW LIMITED — London, inc. Jan 1998
- SHERBOURNE INDUSTRIES LIMITED — London, inc. Mar 1998
All companies incorporated on 10 March 1997 · in Mar 1997.
Reminders for IRWIN BUILDERS LIMITED
Get an email before each filing deadline — accounts and confirmation statement — so nothing is late.